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Commit of a *MAJOR* patch from Dan McGuirk <djm@indirect.com>

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Changes:

        * Unique index capability works using the syntax 'create unique
          index'.

        * Duplicate OID's in the system tables are removed.  I put
          little scripts called 'duplicate_oids' and 'find_oid' in
          include/catalog that help to find and remove duplicate OID's.
          I also moved 'unused_oids' from backend/catalog to
          include/catalog, since it has to be in the same directory
          as the include files in order to work.

        * The backend tries converting the name of a function or aggregate
          to all lowercase if the original name given doesn't work (mostly
          for compatibility with ODBC).

        * You can 'SELECT NULL' to your heart's content.

        * I put my _bt_updateitem fix in instead, which uses
          _bt_insertonpg so that even if the new key is so big that
          the page has to be split, everything still works.

        * All literal references to system catalog OID's have been
          replaced with references to define'd constants from the catalog
          header files.

        * I added a couple of node copy functions.  I think this was a
          preliminary attempt to get rules to work.
This commit is contained in:
Marc G. Fournier
1996-11-13 20:56:15 +00:00
parent 0cec8fe26c
commit 07a65b2255
45 changed files with 861 additions and 588 deletions
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32
src/backend/parser/gram.y
View File

@@ -10,7 +10,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.15 1996/11/11 12:14:09 scrappy Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/gram.y,v 1.16 1996/11/13 20:49:00 scrappy Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -114,7 +114,7 @@ static Node *makeA_Expr(int op, char *opname, Node *lexpr, Node *rexpr);
class, index_name, var_name, name, file_name, recipe_name
%type <str> opt_id, opt_portal_name,
before_clause, after_clause, all_Op, MathOp, opt_name, opt_unique
before_clause, after_clause, all_Op, MathOp, opt_name, opt_unique,
result, OptUseOp, opt_class, opt_range_start, opt_range_end,
SpecialRuleRelation
@@ -123,14 +123,14 @@ static Node *makeA_Expr(int op, char *opname, Node *lexpr, Node *rexpr);
%type <list> queryblock, relation_name_list, OptTableElementList,
tableElementList, OptInherit, definition,
opt_with_func, def_args, def_name_list, func_argtypes,
opt_with, def_args, def_name_list, func_argtypes,
oper_argtypes, OptStmtList, OptStmtBlock, opt_column_list, columnList,
sort_clause, sortby_list, index_params,
name_list, from_clause, from_list, opt_array_bounds, nest_array_bounds,
expr_list, attrs, res_target_list, res_target_list2, def_list,
opt_indirection, group_clause, groupby_list, explain_options
%type <boolean> opt_inh_star, opt_binary, opt_instead, opt_with_copy
%type <boolean> opt_inh_star, opt_binary, opt_instead, opt_with_copy, index_opt_unique
%type <ival> copy_dirn, archive_type, OptArchiveType, OptArchiveLocation,
def_type, opt_direction, remove_type, opt_column, event
@@ -658,17 +658,18 @@ opt_portal_name: IN name { $$ = $2;}
* [where <qual>] is not supported anymore
*****************************************************************************/
IndexStmt: CREATE INDEX index_name ON relation_name
access_method_clause '(' index_params ')' opt_with_func
IndexStmt: CREATE index_opt_unique INDEX index_name ON relation_name
access_method_clause '(' index_params ')' opt_with
{
/* should check that access_method is valid,
etc ... but doesn't */
IndexStmt *n = makeNode(IndexStmt);
n->idxname = $3;
n->relname = $5;
n->accessMethod = $6;
n->indexParams = $8;
n->withClause = $10;
n->unique = $2;
n->idxname = $4;
n->relname = $6;
n->accessMethod = $7;
n->indexParams = $9;
n->withClause = $11;
n->whereClause = NULL;
$$ = (Node *)n;
}
@@ -677,6 +678,11 @@ IndexStmt: CREATE INDEX index_name ON relation_name
access_method_clause: USING access_method { $$ = $2; }
| /* empty -- 'btree' is default access method */
{ $$ = "btree"; }
;
index_opt_unique: UNIQUE { $$ = TRUE; }
| /*empty*/ { $$ = FALSE; }
;
/*****************************************************************************
*
@@ -731,7 +737,7 @@ RecipeStmt: EXECUTE RECIPE recipe_name
*****************************************************************************/
ProcedureStmt: CREATE FUNCTION def_name def_args
RETURNS def_arg opt_with_func AS Sconst LANGUAGE Sconst
RETURNS def_arg opt_with AS Sconst LANGUAGE Sconst
{
ProcedureStmt *n = makeNode(ProcedureStmt);
n->funcname = $3;
@@ -743,7 +749,7 @@ ProcedureStmt: CREATE FUNCTION def_name def_args
$$ = (Node *)n;
};
opt_with_func: WITH definition { $$ = $2; }
opt_with: WITH definition { $$ = $2; }
| /* EMPTY */ { $$ = NIL; }
;